Machine for the wet treatment of fabrics



March 1, 1932. v 4;, mm 1,847,499

MACHINE FOR THE WET TREATMENT OF FABRICS Filed May 27, 1950 Patented Mar. 1, 1 932 UNITED STATES PATENT OFFICE EMIL RINDL, F UZWIL, SWITZERLAND, ASSIG NOR TO FIRM MASCHINE NFABRIK BEN- NINGER A. G-., OF UZWIL, SWITZERLAND MACHINE? FOR THE- WET TREATMENT OF FABRICS Application filed May 27, 1930, Serial No. 456,220, and in Germany July 20, 1929.

ments in machines for the wet treatment of fabrics such as dyeing, washing, impregnating or the like during their winding over from one roller to another in the open state with return movement of the fabric. With machines of this type it is known to provide squeezing rollers adapted to be swung from one winding roller to the othereither by means of a worm gear or a spur gear.

A worm gear having a big ratio permits to exert a strong pressure, however, it presents the disadvantage that the squeezing roller can only be comparatively slowly swung from one winding roller to the other. WVith spur gears the'ratio is essentially smaller'so that the device displaces quicker a squeezing roller of a smaller weight. However, only a small pressure can be exerted if no additional weights are used for loading the squeezing 'roller'after it has been swung into itsnew position.

The present invention provides an elastic squeezing exerting device which permits thick seams to pass without trouble and which obviates the disadvantages of the above described devices. Large-pressures may be exerted and yet the squeezing roller is quickly displaceable.

A constructional example of the subject matter of the present invention'is illustrated on the accompanying drawin s,-in which Fig. l is a vertical section t rough the machine, Y Fig. 2 is part of a side elevation of the machine and i Fig.3 is'an end-view.

Referring now tothe drawings 1 and 1" are the two winding rollers the drive of which is periodically reversed and on and from which respectively the fabric 2 is wound. The

drive of the rollers including the reversing apparatus is not shown in the drawings'of the present invention as it is well known in the art. q

A squeezing roller 3 lined with soft rubber is easily turnable in the arms 4 which in their turn are fixed to the shaft or the tube 5 rotatably mounted in the standards6. One of the arms 4 is connected with agear wheel 7.

- ing the hand wheel 11 and thereby the splur meshing with a pinion 9 fixed on the shaft 8. On the-latter a worm wheel 10 is loosely turnable but not displaceable in the axial direction; the hand wheel '11 is axially displaceable on a feather of the shaft 8 and thus takes part in the rotation of the shaft. The spring 12 urges the serrations 13 of the hand wheel 11.into the serrations 14 of the worm wheel 11. A worm 15 cooperates with the worm wheel 10 and is fast on the shaft 16, the latter being turnably and displaceably mounted in the two bearings 17; a hand wheel 18 is fixed on the shaft 16. Two equal coil springs 19 are inserted between the worm 15 and the bearingsl? and serve for causing and for finely regulating a high pressure between the squeezing roller and the winding-roller in the manner described hereinafter. When winding up the fabric the shaft or gudgeon 20 of the then take-up roller 21 moves along the edge 22 of the arm 23, the latter. being turnable about the pin .24 and adjustable into different inclinations as is shown-in Figs. 1 and '3 depending .on whether the pin 26 of the link is inserted in the hole 27 or'28. The link 25 is turnable about the pin 30 mounted on the hand winding-uproller 1 to the left hand taking-up roller 21 the squeezing roller 3 may be swung towards the vleft by displacing the hand wheel 11 on the shaft 8 against the pressure of the spring 12 so that the claw coupling 13-14 is out of action. By turngear9 and 7 the pressure roller 3 is quic ly swung towards the left, whilst the worm drive 10, 15 is cut out. lVhen the hand wheel is released the claw coupling 13, 14 is again rendered operative by the pressure of the spring 12.-

By turning thehand wheel 18 any desired pressure between the squeezing roller 3 and the winding up roller 1 may be produced 'inthe following manner: By turning the hand wheel 18 in the clockwise direction the worm 15 fixed to the shaft 16 causes a clockwise turning movement of the worm wheel 10 and of the hand wheel 11, coupled to the worm wheel by means of the claw coupling 13, 14- and of the shaft 8.

By the transmission of the gear wheels 9 and 7 the shaft and the arm 4 are turned counter-clockwise. As soon as the squeezing roll-er?) bears strongly against the winding up roller 1 the shaft 5 and thereby the shaft 8 can no longer turn; if the hand wheel 18 is nevertheless further turned the self-locking worm 15,- which cooperates now with the stationary worm wheel 10, must displace itself from right to left and the extent of this displacement is equal to the pitch of the worm for a complete revolution of the hand wheel 18. The two springs 19, which 'abut on one side against the bearings 17 and on the other side against the worm 15 hold the latter in the mid-position between the two bearings 17 as long'as the shaft 8 and the worm wheel can be turned.

- If, however, as has been mentioned above,

the worm wheel 10 can no longer be turned as soon as the rollers 3 and 1 are pressed againsteach other, the worm compresses the left hand spring 19 when it is displaced towards the left and simultaneously relieves the right hand spring 19. The reaction of the thus compressed spring acts through the intermediary of the worm tangentially on the worm wheelfrom left to right and causes a turningrmoment in the clockwise direction to be exerted on the worm wheel; as the latter -is coupled to the pinion 9 by the claw coupling "the same turning moment is exerted on the- ;gear wheel 7 in the anti-clockwise direction whereby the squeezing roller 3 is pressed from above on the winding up roller 1 according to the reaction of the spring. Thereby between the squeezing roller and the winding squeezing device'the arms 28 may be set at such a small inclination that the fabric wound on the taking-up roller 21'is not in contact with the squeezing roller 3. This po-V sition may also be desirable without the use of, the squeezing device if certain fabrics have to be wound up at a very small pressure, i. e. if the fabric 2 has to rest with only a-small portion of its weight on the winding-up roller 1 during the winding. The small inclination of the arms .23 facilitates the insertion and removal of the batch rollers with the fabrics, as the latter do not need to be lifted as high as is the case with much inclined arms 23. The great inclination of the arms 23 may, on the other hand, be desirable if without using the squeezing device a certain squeezing action has to be exerted on the fabric by the weight of the batch roller. The arm 23 may also be placed vertically whereby an abutment would have to be provided for the shaft of the batch roller.

Iclaim:

1-. In a machine of the class described, the combination with a vat, two fabric winding rollers thereon and guide rollers in the vat, a squeezing roller, vtwo swingably mounted arms on which said squeezing roller is mounted and adapted to be brought into cooperation with either of the two fabric winding rollers, spring means adapted to press said squeezing roller yieldingly against the coopcrating empty fabric winding roller, and means for manually adjusting the pressure exerted by said spring means.

2. In a machine of the class described, the combination with a vat, two fabric winding rollers thereon and guide rollers in the vat, asqueezing roller, two arms on which said squeezing roller is mounted, a shaft on which said arms are fixed, a further shaft, a pair of spur gear wheels interposed between said two shafts for swinging said arms to bring the squeezing roller to bear against one or the other of said winding rollers, a worm wheel adapted to be brought into and out of driving engagement with said second shaft, a worm cooperating with said worm wheel and adapted to be axially displaced against the latter, springs acting in the axial direction against both ends of said worm, and means for causing an. axial displacement of said worm and thereby a yielding pressure of said squeezing roller against the cooperating winding roller. y

3. In a machine of the class described, the combination with a vat, two fabric winding rollers thereon and guide rollers in the vat, a squeezing roller, two arms on which said squeezing roller is mounted, a shaft on which said arms are fixed, a further shaft, a pair of spur gear wheels interposed between said two shafts for swinging said arms to bring the squeezing roller to bear against one or the other of said winding roller's, a worm wheel loosely mounted on said second shaft, a hand wheel in driving engagement on said second shaft, coupling means inserted between said worm wheel and said hand wheel, a worm cooperating with said worm wheel and adapted to be axially displaced against the latter, springs acting in the axial direction against both ends of said worm, and a hand wheel rigidly connected to said worm and adapted to cause an axial displacement of said worm and thereby a yielding pressureof said squeezing roller against the cooperating. winding roller.

spring means, batch rollers for taking up the e fabric, gudgeons on said batch rollers, arms on which said gudgeons of the batch rollers freely roll, and means for altering the inclination of said arms, to bring the batch roller out of contact with the squeezing roller.

In testimony whereofI have signed my name to this specification.

EMIL RINDL. I 

